CN2905876Y

CN2905876Y - Snow-melting device for railway turnout

Info

Publication number: CN2905876Y
Application number: CNU2006200965994U
Authority: CN
Inventors: 刘博�; 闫慧博; 王永; 余水龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-09
Filing date: 2006-05-09
Publication date: 2007-05-30
Anticipated expiration: 2016-05-09

Abstract

The utility model discloses a railway turnout snowmelt device. A heat pipe (5) buried in soil is utilized for the geothermal transmission to the turnout on the ground surface, so that the snow on a sliding bed board (3) can melt with the way of heating. The insulation and evaporation sections of the heat pipe (5) are deeply buried in soil, wherein the evaporation section is in contact with soil. A sleeve (11) is arranged on the outside of insulation section, and the outer wall of the sleeve (11) is in contact with soil. The porous medium (10) is packed between the inner wall of the sleeve (11) and the outer wall of the insulation section. A thermal bridge pieces (2) is adopted for the fixation connection between the condensation part of the heat pipe (5) and one of the turnout components sliding bed board (3). Compared with the prior art, the utility model is energy saving, without the maintenance and operating costs and with high reliability and long service life. Particularly the wide range of application can meet the railway turnout snowmelt needs in high latitude cold areas.

Description

The railway switch device for melting snow

Technical field

The utility model relates to a kind of railway switch device for melting snow, especially is fixedly mounted on the railway switch device for melting snow that track switch is gone up and utilized mode of heating to thaw ice and snow.

Background technology

To be the pilot engine vehicle transfer the transitional facility of another circuit to by a circuit to railway switch, and it carries out different combinations by the translation of tongue with stock rail, thereby realizes the switching of circuit.Switch structure complexity, maintenance be difficulty relatively, is the weak link on the rail track.Especially in the winter of vast northern area, a large amount of snowfalls is clipped between tongue and the stock rail, makes that tongue and stock rail can't be closely connected, thereby has seriously hindered the normal switching of track switch.For a long time, railway switch accumulated snow problem is not well solved all the time, causes the report of the late operation of train of common occurrence about track switch place accumulated snow.

Main now snow removing mode has following several:

Artificial snow removing.The staff uses the instrument that manually clears the snow, the operation of being in the action.This mode relies on manpower, and promptness is poor, and labourer usually is brave wind and snow work under bad environment.

The dynamic power machine snow removing.Device is fixedly mounted on by the switch structure, utilizes high velocity air to blow away the snowflake of landing.This mode needs external power-equipment to produce compressed air, and the efficiency of compressor is lower and the life-span is short, maintenance cost is high.

The electrical heating snow removing.By being affixed on the electric heating sheets heating track on the rail, thaw ice and snow.This mode

The snow melt effect is better and simple in structure, but has expended a large amount of electric energy, and running cost is higher.And electric energy is high-quality energy, and from the angle of cascaded utilization of energy, it is extremely uneconomic producing heat energy with electric energy.

In Japan of the eighties in 20th century and European, people utilize hot pipe technique to extract geothermal energy and are used to the face of land, thereby the accumulated snow of thawing highway pavement ensures traffic safety.This geothermal source heat pipe snow melt scheme is utilized the natural heat accumulation of soil, with the very little temperature difference heat is passed to highway pavement with heat pipe.Hot-pipe system has the not advantage of the consumables energy, no running cost, and does not have mechanical parts, need not safeguard substantially, and reliability height, life-span are long.All statements to some extent in the 230th page to the 233rd page of " practical hot pipe technique " book that the 309th page to 311 pages of " heat pipe design and application " book that this technical scheme was published in Chemical Industry Press in August, 1987 and Chemical Industry Press publish in October, 1988.

China State Intellectual Property Office is at invention disclosed application for patent on May 11st, 2005 " preventing railway switch accumulated snow device ", propose above-mentioned heat pipe snow melt scheme is applied to railway switch, promptly utilize hot pipe technique to extract the thawing that geothermal energy is used for railway switch place ice and snow.The application number of this patent of invention is CN200410096770.7, and publication number is CN1614150, be in the examination as to substances stage, and unauthorized.This technology is to the not tangible improvement of heat pipe snow-melting system of aforementioned highway, so have common shortcoming with it: the soil heat energy that hot-pipe system consumes in the winter time must recover before arriving next winter, otherwise the snow melt ability of next year will reduce, make this heat pipe of thermal source routinely snow melt technology to obtain good result, be restricted than just applying on the high latitude railway line in relatively low latitude area.

The utility model content

The technical problems to be solved in the utility model provides the railway switch device for melting snow that a kind of regional scope of application is wider, practicality is stronger, promptly can break through the weather conditions restriction of thermal source heat pipe snow melt technology routinely, be applied to the more railway line of the cold district of high latitude, for it provides better snow melt effect, in order to the normal operation of high latitude switch structure.

For solving the problems of the technologies described above, railway switch device for melting snow of the present utility model utilization is embedded in heat pipe in the soil and geothermal energy is extracted the face of land is used; The adiabatic section of heat pipe and evaporator section are buried in soil, and wherein evaporator section contacts with soil, and the rainfall of sleeve in order to three seasons of water conservancy diversion spring and summer autumn is set outside the adiabatic section; Sleeve outer wall contacts with soil, filling porous medium between sleeve lining and the insulation layer outer wall, to the requirement of porous media be good water permeability in local soil, and the dirt that carries in the surface water had certain catharsis, do not influence phreatic water quality; The condensation segment of heat pipe adopts the heat bridge spare of design voluntarily to fixedly connected with the slide plate of one of point components.

Wherein, heat pipe is selected thermal siphon for use, relies on gravity to promote condensate liquid fully and refluxes, and need not adopt the imbibition core, and cost is low, and is simple and reliable for structure, and the life-span is long; Heat pipe is embedded between adjacent two sleepers, the construction volume when reducing old turnout technology and transforming; Be that the heat bridge spare of flute profile is fixedlyed connected with cross section between the slide plate on heat pipe condenser section and the two adjacent groups sleeper, it is along the line that the heat that condensation segment is discharged by flute profile heat bridge spare reasonably is directed to whole track switch, farthest reduces the influence of accumulated snow to the track switch running; The condensation segment of heat pipe and evaporator section outside wall surface all add fin, in order to strengthen the heat-transfer effect between heat pipe and adjacent media; Sleeve tip designs funneling has strengthened the inlet area of tube-in-tube structure to a certain extent, increases the collecting amount of rainwater, strengthens and returns the effect of adding heat by rainwater.

The utility model has the advantage of thermal source heat pipe snow melt technology routinely on the one hand, and energy conservation need not be safeguarded and running cost, the reliability height, and the life-span is long; Design by tube-in-tube structure on the other hand, the rainwater in three seasons of spring and summer autumn can be filled in the soil of deep layer more, the deep soil that temperature declines by a big margin in making in the winter time returns to higher temperature faster, arrival advances into the design temperature state in winter next year, thereby the technology described in the CN200410096770.7 application for patent of having eliminated is at the annual soil heat capacity energy imbalance that occurs than high latitude area, guarantees that snow melt in winter next year is working properly to carry out.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the sectional view of a kind of embodiment of the utility model railway switch device for melting snow.

The specific embodiment

As shown in Figure 1, wherein 3,4,7,8 is the railway switch inherent structure, stock rail 7 place slide plate 3 above, slide plate 3 is fixed on the sleeper 4, is the railway bed 7 that gravel constitutes below the sleeper 4, is local soil 14 below the roadbed 7.

As shown in Figure 1,

parts

1,2,5,6,9,10,11,12,13 constitute a kind of embodiment of the utility model device for melting snow.Heat pipe 5 is vertically buried underground in route base 7 and the soil 14, buries underground a little between adjacent rail sleepers 4.Heat pipe 5 is selected steel tubing for use, and the heat-pipe working medium 12 of filling in the pipe is selected ammonia for use.Condensation segment at heat pipe 5 is welded with condensation segment fin 6, and the evaporator section of heat pipe 5 is welded with evaporator section fin 13, and the adiabatic section of heat pipe 5 is enclosed with insulation layer 9.The outer concentric of insulation layer 9 is embedded with sleeve 11, and it is the quartz sand of 1～2mm that the porous media 10 of filling between sleeve 11 inwalls and insulation layer 9 outer walls is selected granularity for use.The top of sleeve 11 connects funnel shaped catch basin 1, and catch basin 1 is embedded in the gravel of railway bed 8.Heat bridge spare 2 is exposed to road bed, becomes 10 degree inclination angles to be provided with horizon, and two ends are welded on the condensation segment top of heat pipe 5 and the side of slide plate 3.It is the channel-section steel of flute profile that heat bridge spare 2 is selected cross section for use.

Claims

1. railway switch device for melting snow, the heat pipe (5) that utilization is embedded in the soil extracts the face of land with geothermal energy, it is characterized in that: the adiabatic section and the evaporator section of heat pipe (5) are buried in soil, wherein evaporator section contacts with soil, sleeve (11) is set outside the adiabatic section, sleeve (11) outer wall contacts with soil, filling porous medium (10) between sleeve (11) inwall and insulation layer (9) outer wall; Adopt heat bridge spare (2) to fixedly connected between the slide plate (3) of the condensation segment of heat pipe (5) and one of point components.

2. railway switch device for melting snow according to claim 1 is characterized in that: described heat pipe (5) is a thermal siphon.

3. railway switch device for melting snow according to claim 1 is characterized in that: burying underground of described heat pipe (5) a little is positioned between adjacent two sleepers (4).

4. railway switch device for melting snow according to claim 1 is characterized in that: the cross section of described heat bridge spare (2) is a flute profile.

5. railway switch device for melting snow according to claim 1 is characterized in that: the fixedly connected evaporator section fin of the evaporator section outside wall surface of described heat pipe (5) (13).

6. railway switch device for melting snow according to claim 1 is characterized in that: the fixedly connected condensation segment fin of the condensation segment outside wall surface of described heat pipe (5) (6).

7. railway switch device for melting snow according to claim 1 is characterized in that: the head portion of described sleeve (11) is an infundibulate, or the top of sleeve (11) is connected with funnel shaped catch basin (1).